Unit 2: Day 2

    Today, Students will review the Pythagorean Theorem. We will define angles. We will sum Triangle angles. Triangle classifications--Distance Formula. 


Pythagorean Theorem= a2 + b2 = c2.
Angle: The amount of turn between two straight lines that have a common end point (the vertex).

Distance Formula: Given the two points (x₁, y₁) and (x₂, y₂), the distance between these points is given by the formula:

Quiz

1) 

Solve this triangle using Pythagorean Theorem.

2) 

Solve this triangle Using Pythagorean Theorem.

3) What type of triangle is this?

Answers

1) a² + b² = c²

5² + 12² = c²

25 + 144 = c²

169 = c²

c² = 169

c = √169

c = 13

2) a² + b² = c²

9² + b² = 15²

81 + b² = 225

Take 81 from both sides:

b² = 144

b = √144

b = 12

3) It is an acute triangle and scalene.